A device turns sunlight into hydrogen with new efficiency. It combines next-gen halide perovskite semiconductors with electrocatalysts.

If Europe fails to immediately invest 302 billion euros in infrastructure, it will not reach its 2050 target of net-zero emissions.

A new catalyst is way more efficient than others at splitting water into oxygen and hydrogen, which could cut carbon emissions.

The vast majority of electric vehicle owners charge their cars at home in the evening or overnight. They're doing it wrong, researchers say.

Electricity-generating rooftop solar cells can save a significant amount of water. In some states, individual household water saving can reach up to 1,000%.

"In principle, we can now scale semitransparent organic solar cells to two meters by two meters, which brings our windows much closer to reality."

How much energy is enough for each person to live a happy healthy life? New research finds it's a lot less than people use in many richer countries.

Offshore wind power could help lower wholesale electricity prices in six New England states, with low risk of turbine failure during extreme winter storms.

If just a third of the wind and solar projects proposed in Texas became reality, it could eliminate the state's remaining coal plants and their emissions.

A new method could be a big boost for solar energy. "This could really accelerate the production and deployment of perovskite solar panels and cells."